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Long-term durability of preserved aortic root after repair of acute type A aortic dissection

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Abstract

Background

Optimal management of aortic root in type A aortic dissection (AAD) is controversial. To determine the most appropriate strategy, we studied the late outcomes after conservative repair of aortic root.

Methods

234 AAD patients (mean age 68 ± 12 years) underwent surgical repair using supracommissural replacement (SCR) for aortic root reconstruction from 1989 to 2014. Ascending aortic replacement or hemi-arch replacement was performed in 180 patients (non-arch group), whereas total arch replacement (TAR) was performed in 54 patients. In both groups, proper and firm reapproximation of proximal edge was performed exactly at the sinotubular junction (STJ). The long-term durability of preserved aortic root (mean follow-up 89 months) was evaluated.

Results

Hospital mortality occurred in 25 of 234 patients (10.6%). Aorta-related deaths occurred in five patients (four in non-arch; one in TAR), with over 90% 10-year actuarial survival rate in each group. Among 19 aorta-related events, there were only four proximal events (three in non-arch; one in TAR). The 10-year freedom rate from proximal aorta-related events exceeded 90%, with no significant difference in both groups. Freedom rate from moderate aortic regurgitation at 10 years was statistically similar between non-arch (86.3%) and TAR (85.7%) groups.

Conclusions

The long-term durability of SCR with proximal aortic reapproximation exactly at the STJ was acceptable with low rates of proximal aortic events. This technique can be the standard technique for aortic root reconstruction in AAD patients, except those with aortic root pathology.

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Authors and Affiliations

  1. Department of Cardiovascular Surgery, Nagasaki Kouseikai Hospital, 1-3-12 Hayama, Nagasaki, 852-8053, Japan

    Keiji Kamohara, Shugo Koga, Jun Takaki & Nozomi Yoshida

  2. Department of Thoracic and Cardiovascular Surgery, Saga University Hospital, Saga, Japan

    Kojiro Furukawa & Shigeki Morita

Authors
  1. Keiji Kamohara
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  2. Shugo Koga
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  3. Jun Takaki
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  4. Nozomi Yoshida
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  5. Kojiro Furukawa
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  6. Shigeki Morita
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Correspondence to Keiji Kamohara.

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The authors have declared that no conflict of interest exists.

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Kamohara, K., Koga, S., Takaki, J. et al. Long-term durability of preserved aortic root after repair of acute type A aortic dissection. Gen Thorac Cardiovasc Surg 65, 441–448 (2017). https://doi.org/10.1007/s11748-017-0783-z

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  • DOI: https://doi.org/10.1007/s11748-017-0783-z

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